Charley Brindley 
Raji, Book Two [EPUB ebook] 
The Academy

Raji is accepted to the prestigious Octavia Pompeii Academy. She and Elizabeth Keesler are the only girls in the student body of one hundred cadets. They must endure the derision and taunts from ninety-eight boys who would like nothing better than to see the girlsout of school. In addition to the contempt of the male students and the high academic standards set by the instructors, they must also conform to the strict disciplinary code enforced by the indomitable Elvira Gulch, Director of Development.